hi: to buy directly with disney, the minimum number of points to buy in is 150 @ $72 per point or $10,800. this can be financed through disney or through your own financing. the price per point will be going up on 6/3 to $75. the only properties available through disney at this time are vwl, hh, or vb. if you'd prefer okw or bwv, your only options are through resale, which may be cheaper per point but would incur closing costs.
read through the dvc faq at the link near the beginning of this board and post if you have additional questions.